PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-01:28:00
G10     290.5          49.4                8.7 +/-    2.73      11.0 +/-    2.73  0.050 / 0.090
G15     47.7           35.0                7.0 +/-    1.07      11.2 +/-    1.07  0.070 / 0.090
G20     301.7          54.6                7.9 +/-    0.75       9.5 +/-    0.75  0.050 / 0.030
G21     74.4           77.1                8.0 +/-    0.48       8.2 +/-    0.48  0.050 / 0.040
G24     101.3          24.4                9.5 +/-    1.42      18.8 +/-    1.42  0.080 / 0.130
G27     305.5          31.8                7.7 +/-    1.31      13.0 +/-    1.31  0.100 / 0.130
G29     168.8          13.0               11.6 +/-    1.42      30.4 +/-    1.42  0.080 / 0.070
G32     208.3          29.0               13.0 +/-    2.07      23.3 +/-    2.07  0.080 / 0.070